Nut-lock.



L. A. SMITH. NUT LOCK.

APPLICATION FILED APE. 21.1908.

Patented Jan. 5, 1909.

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muv w www f 1'.' dem specificv descri 'UNITED STATES PATENT oEEIoE.

LEWIs A. SMITH, or AKRON, oHIo.

NUT-Loox.

Specification of. Letters Patent. I

Patented J' an. 5, 1909.

Application led April 21, 1908. Serial No. 428,828. g

to provide a simple lock which will be prac.

tically out of sightswhen the nut is turned home l on the bolt.

Another object. vo f the invention is to rovide a nut lock which will require but sllght alteration 'in the nut and bolt.

rl`hese and other objects may be attained by means ofthe construction illustrated in the accompanying drawing, in which,-

Figure 1 is la partial longitudinal sectional view of a bolt bolt in kaccordance 2 is av face View ofthe nut. transverse fsection of the bolt. sectional view of the ductile gasket.

`Referring to the drawing for a more ption of my invention, the

withmy invention; Fig. Fig. 3 is a Fig. 4 is a washer or .numeral 1 designates `a bolt which maybe provided with the usual head- 2 and threaded portion 3'. Formed longitudinally of the bolt is one or more V-shaped indentations 4 which in'tersectvthe threads of theb'olt and Ing a boreS 4The outer ofthe face of the bolt extend beyond the threads into the body of the bolt, as .Shown more particularly in Fig. 3. 1 l

In carrying out my invention I make use of twol nuts which are substantially identical. in `contour, one of said nuts, however, being disposed oppositely to. the other. Each of thesenuts consists of a body portion `5 havand screw threads to ,fit the bolt. face 0f thisnut has a concaved or inwardly beveled portion 6 which surrounds 7 of the bolt, and irl-this beveled or concaved portion is a orl indentations 8. The-marginal portions The outer 'nut 10 is substantially identical with theinner nut,

to the llat'outer face'n an'oppdsite direcand a nut locked upon said series of depressions are beveled, as atv 9. z'

w1 the exception that the threads` run from t e o oncaved portion tion to the other nut, so that when the concaved faces of said nuts are brought together. the screw threads will then extend in thc same direction through both nuts.

When the inner nut is screwed home and a washer or gasket l1 made of lead or some slnulal.l material isfplaced upon the bolt and the outer nut is placed upon the bolt and screwed against the washer, the latter will spread in the indentations 4 and will praotically lill .the spaces 6 between the nuts, while the beveled portions 9 will have a tendency to out away any of the leaden gasket which might-be spread and forced outward beyond the sharp cutting Surface formed b v the bevels 9.

From the foregoing it will be obvious that in order to remove the nut from the bolt thenut 10 must first be removed; the gasket 11 must then be removed from the inner bolt, and the latter may then be removed.

`M but inner nut firmly in y invention is of simple construction, 1s very eiiicient In use and wlll lock the place and prevent lts being removed by jarring or by any of the natural movements which generally loosen" Having thus described the invention, what is claimed as new, is

The herein described nut lock comprising a bolt having indentations in opposite sides of the threaded portion thereof, va nut having an inwardly beveled face and provided withD a series 'of depressions in said beveled face, a compressible ring or gasket.V

and anauxiliary nut having a face beveled oppositelyto that of said nut, said gasket being compressed to force some of the material, of the compressible ring into the indentations in the bolt and into the depressions in the face of the first mentioned nut. said nut and auxiliary nut having oppo- "sitel 7 beveled contacting portions to cutY away the surplus material from the gasket.

In testlmonvwhereof I aflixmy signature 1n presence of -two Witnesses.

LEWIS A. SMITH., I

Witnesses:

ARTHUR BARTON, JOHN Mo'rz. 

